#ifndef _MAIN_H_
#define _MAIN_H_

#include "stdio.h"
#include "string.h"
#include "stdlib.h"
#include "stdint.h"

typedef struct{
    char name[20];
    int ID;
    char sex[16];
    int age;
}_data;

typedef struct student{
    _data data;
    struct student *p_next;
}_my_type;

enum{
    add = 1,
    del,
    change,
    look,
    quit
};




#endif
